Method of making chain links



Dec. 19, 1933. H, TAYLOR 1,939,735

METHOD OF MAKING CHAIN LINKS Original Filed May 2, 1931 F69 Edge.

Patented Dec. 19, 1933 UNITED STATES PATENT OFFICE METHOD or MAKINGCHAIN LINKS Humphrey George Taylor, Penn, near Wolverhampton, EnglandSerial No. 650,691

4 Claims. (Cl. 59-35) The invention relates to the production-of chainlinks of the type consisting of two U-shaped end members and atransverse stud, one end being joined to the other by butt arc welding,that is by passing a heavy electric current therethrough, and has forits object to make provision for a transverse stud in a very convenientand efficient manner.

Heretofore, in a welded link having a transverse stud, the latter hassometimes been separately welded in, but this is expensive and can notbe performed by butt arc welding, as the link is already closed. Inanother case the stud has been formed by wrapping one part of the linkover the other; but, in this case also, the process of butt arc weldingcannot be utilized.

The invention consists in first forming the link in two parts, thedivision being along the length of the stud whereby the latter isdivided into two parts each part of the stud being integral with therespective end member and joining into it at its two ends, and one oreach of said stud parts being divided transversely to allow therespective linkend to be opened out to receive the next link and thenclosed up again, or said link part initially formed opened out, and thenpermanently joining the two parts of the link together by weldingtogether the two parts of the stud along the length thereof.

If both stud parts are divided transversely, the next adjacent link ateither side may be formed as a plain stamping with the two ends and thestud in one piece. If, however, only one stud part is dividedtransversely each link will be formed according to the invention.

The invention is described with reference to the drawing herewith, ofwhich:

Figure 1 is a view of the link complete.

Figure 2 is a view of the two parts of the link divided as they appearbefore the welding operation.

It will be seen by reference to the drawing that the link is formed intwo parts A, A, of which the part A comprises a loop a and a half stud bthe stud being divided longitudinally into two equal parts, while thelink part A comprises a loop a and the other half b of the stud. Thehalf stud b is divided transversely at (1 so that it can be opened outto receive the next link after which it is closedagain. The two halvesof the stud are then'joined together by electric arc weld- 155, the arestriking across the whole of the space between the stud halves wherebythey may be permanently joined together.

The stud b may also be divided transversely if desired, as indicated bybroken lines, in which case every alternate link of the chain may be aplain stamping with the ends and stud in one piece only, the otheralternate links being formed according to the invention.

Having fully described my invention what I claim and desire to secure byLetters Patent is:-

1. A method of forming a chain link having two end portions ofsubstantially U-shape and a transverse stud, said method consisting informing two parts of a chain link, each part of the chain link having alongitudinal part of the stud integral therewith, one of said parts ofthe stud also being divided transversely to permit the insertion of thenext link, positioning the two parts of the link with their studsurfaces in abutment, and then permanently joining the two parts of thelink together by electrically welding together the two parts of the studalong the length thereof. a

2. A method of forming a chain link having two end portions ofsubstantially U-shape and a transverse stud, said method consisting informing two parts of a chain link, each part of the chain link having alongitudinal part of the stud integral therewith, each of said parts ofthe stud also being divided transversely to permit the insertion of therespective adjacent links, positiom'ng the two parts of the link withtheir stud surfaces in abutment, and then permanently joining the twoparts of the link together by electrically welding the two parts of thestud along the length thereof.

3. A method of forming a chain link having two U-shaped end portions anda transverse stud, v

said method consisting in forming two substantially U-shaped members,each of said U-shaped members having a longitudinal half of a studintegral. therewith and providing an abutting surface for said halves ofthe stud, one of said stud elements also being divided transversely topermit the insertion of the next link, positioning the two U-shaped endmembers with the aforesaid longitudinal surfaces of the stud elements inabutment, and then permanentlyjoining the two two end portions ofU-shape and a transverse stud, said method consisting in forming twosubstantially U-shaped parts of a chain link, each of said U-shapedparts having, a longitudinal half of a stud integral therewith andproviding 'an abutting surface for halvesof the stud, each of said studelements also being divided transversely to permit the insertion of therespective adjacent links, positioning the two parts of'the link withthe surfaces of the'halves of the stud in abutment, and then permanentlyjoining the two halves of the stud along the length thereof.

HUMPHREY GEORGE TAYLOR.

